a cleaner environment. safer world. you want all that, right? well, the european space agency says it's got the answer, and it's in space. cnn's aiyish reports from london. >> like an audio gps for the blind and visually impaired, the faster it ticks, you are on the right track. >> if you turn to the right side,ist the wrong way. if you go to the left side, it's the wrong way. so you find in the middle where it's very loud. there you have to go. >> reporter: satellites are used by different industries, like aviation. used in bad weather for planes and helicopters. >> the new aviation paradigm is going to be satellite navigation to be sure that aircrafts are going to be better using the airspace and the use of landing, and that there's more safe landings available at airports that don't have a lot of traffic. >> this is the european space expo. a traveling exhibition dome showing off space applications and the flagship projects of the european space program. for antonio, vice president of the european commission, space is at the center of the e.u